I would change the hand guards. AKs were given away to countries that didnt like us during the cold war, have been copied by a lot of companies in a lot of different countries...
I ordered 6 surplus magazines for mine from one vendor. Three were the same, the other three unique. In the process of cleaning out cosmoline, I found that "this" floorplate wouldnt fit "that" magazine, even though they looked identical...
So I took all of the mags apart, and engraved a number into the tube, follower, and floorplate.